Power-riddle.



F. P. TESSMER. PowER RIDDLE.

APPLICATION FILED- AUG. l 5. 1918.

Patented Apr. 1, i919.

2 SHEETS-SHEET 1.

@1mi/Waco .61@ if @M C1 ttor mi 13a ifn P. TEssMm POWER RDDLE.

APPLICATION FILED AUGJS. 1918- A 1,299,262. Patented Apr. 1,1919.

2 sH'EETs-SHEET 2.

FREDERICK P. TES-SMER, OF DETROIT, MICHIGAN.

POWER-RIDDLE.

Specification of Letters Patent.

, Application led August 15, 1918. Serial No. 249,967.

- To all 'whom it may Concern.'

Be it known that I, FREDERICK P. TEssMEn, a citizen of the United States of America, residing at Detroit, in the county of TVayne and State of Michigan, have invented certain new and useful Improvements in Power- Riddles, of which the following is a specification, reference being had to the accompanying drawings.

In the operation of a riddle by power in molding shops and foundries, it is desirable not only that the proper motion be given to the riddle, but that the latter also be so designed that it may be operated while standing on the floor, or may be hung from an overhead trolley support and be shifted readily to any part of the foundry floor, as desired, while at the same time the operating parts permit the use of screens or riddles of any desired mesh, and the running gear is shielded as much as possible -from the dirt and dust in the foundry.

' This invention relates to a power riddle adapted to be supported from the iioor or from an overhead trolley, and to provide for support of riddles, interchangeable, so that any desired mesh of screen may be used. The device also includes means that gives proper motion to the riddle with a slight expenditure of power, while the running parts are shielded from contact with the operator and from the dirt and dust prevalent in the operation. The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claim.

In the drawings,

Figure is a plan view of a riddle that embodies features of the invention;

Fig. 2 is a view in side elevation thereof;

Fig. 3 is a view showing the riddle arranged for suspension from an overhead trol ley track; and

Fig. l is a view in detail of a part of the riddle supportingmeans.

As herein shown in preferred form, a main frame is provided in the form of a segmental yoke 1 with a casing 2, integral preferably therewith, in which a motor 3 is housed, the shaft 4 of the latter being connected by appropriate gearing 5 with a pitman shaft 6 journaled in a bearing 7 that is carried on a transverse partition 8 of the casing. Or any other suitable driving means may be housed in the casing, which latter is inclosed by means of al cover plate 9 secured in position by binding rods 10 and suitable holding nuts V11. A pair of shackles or hangers 12 depend from pivotal supports on the extremities 13 of the yoke arms and are in turn pivoted at the lower extremities to a clamping ring 14, the severed end portions of which are interconnected by a suitable clamp. As herein indicated, this may take the form of a lug 15 on one of the end portions through which the screwthreaded shank of a link 16 is passed, the other end of which is pivoted to a handle 17. The latter is hinged as at 18, to a lug 19 of the other end portion of the split ring, so as to draw the ring firmly around the frame 2O of an inserted riddle and hold it when the handle is turned inwardly as indicated at Fig. 1, there being a hand nut Q1 whereby the length of the link 16 may be adjusted to meet variations in sizes of the riddle frames, which may be inserted.

The riddle also rests on the inturned lugs 22 of the ring 14, adjacent of the shackles 12, on a corresponding lug 23 of the lug 15 and on a lug 2s of an arm 25 which is secured to a pitman rod 26, that engages an eccentric 27 on the shaft 6. As a further detail of good construction, the arms of the yoke 1 are provided with a deflecting flange 27 that overhangs the marginal portion of the riddle rim and returns to the latter any sand that may be thrown out by the agitation of the riddle.

llhere the device is to be supported on the Hoor, a tripod arrangement is used wherein a pair of suitably arranged legs 28 are inserted in pockets in the yoke 1, while a rear leg 29 is similarly inserted in a socket 30 of the casing 2, the legs being cross stayed as indicated at 31, or otherwise arranged to properly uphold the device.

Preferably the pocket portions 32 in which the legs 28 are inserted are at substantially the center of balance of the machine.

lhen the device is to be used on an overhead trolley, as indicated in Fig. 3, a suitable hanger 34 has depending arms inserted in the sockets where the legs 28 were previously placed, and a trolley wheel 35 and strap 36 are suitably connected to the upper portion thereof and arranged to run on a track 37 or the like. Because of the position of the arm sockets at the center line of balance, the device hangs level.

As a result of this construction, a suitable action is given to the riddle to provide for the necessary agitation of the sand and sucu cessful riddling thereof, while the working parts of the device are housed against con- Fatented Apr. 1, 1919.

tact with the dirt, and the operator cannot ter ejected from the riddle carried by the be injured thereby. supporting means When the latter is oscil- Obviously, changes in the details of conlated, means on the frame for oscillating the 15 struction may be made Without departing supporting' means, and means for supporting 5 from the spirit of my invention and I do not the frame in operative position.

. care to limit myself to any particular form ln testimony whereof I aiX my signature or arrangement of parts. in the presence of two Witnesses.

Vhat I claim is f F EDERI K P. TE MER. A power riddle comprising a main trame 'R C SS 10 with a yoke extending therefrom, riddle sup- 1Witnesses: e

porting means oscillatory on the yoke, means C. R. STICKNEY, on the yoke for defleoting and returning mat- ANNA M. Donn.

Copies of this patent may be obtained for ve cents each,by addressing the Commissioner of Patents, Washington, D. C. 

